In an interview with Yahoo Style, the 37-year-old actor revealed that he and his wife, Anna Faris, spend a lot of time working with children's hospitals after their son, Jack, was born in 2012.
“Anna and I went through a lot with our guy and spent a lot of time in the NICU,” he revealed. “I can’t imagine a world where I don’t have [Jack] in my life… “I wouldn’t call it an obligation. It’s an opportunity. I can only speak to my experience."
"You can do a big premiere. You get your star on the Walk of Fame. You can do all those things and none of them make me feel anything remotely close to what it feels like to go to Seattle Children’s Hospital and be with these kids and their families," he added.
Jack, who was born premature, is now as healthy as can be -- and the star of his parents' social media pages.
“Those are those little snapshots into our life. It’s really cool. Those types of moments are the most meaningful. It’s the little, tiny life things. Being able to see that moment forces me to remember that that is the moment I’m teaching my son to tie his tie," Pratt said. "So much of this stuff that we do, you’re never really present. You’re focusing on the next thing."
Pratt told ET last month that having his family with him was the "best part" of promoting Guardians of the Galaxy Vol. 2.
"It’s nice to have your family with you because it brings you down to earth and when you leave your feet on the ground, you [realize] what it feels like to have your head in the clouds," he said.
“You go with the flow and things come and go and you’re not even there to record or observe them,” Pratt continued, explaining how life can become a whirlwind when he’s on his own. “So when [your family] brings you back down to earth, you get to experience this -- or at least I do -- in a whole different way. When they are present with me, I get to be present with me as well."